With the upcoming full season release comes a proper HDR support.
It’s time for Sapienza to look even better – Hitman will get a full season release on January 31st and it is then that the game will receive an update that unlocks HDR. It will be available on PC, PS4 (both standard and Pro) and Xbox One S.
https://twitter.com/Hitman/status/822074672846110720
Here’s an official comment from IOI Programmer Anders Wang Kristensen:
As an example, think of 47 in a dark room looking out a bright window. Without HDR you would not be able make out what’s outside, whereas with HDR you can simultaneously see details inside the room and outside the window. Another extreme example is the sun. Without HDR we could not render the sun brighter than a white piece of paper, so we had to ‘simulate’ the sun being blinding. With HDR we can draw the sun several times brighter, so that it is actually close to being blinding, just like in real life.